Add a symbols_map tool for extracting identifiers from elf and r8 files

Add a symbols_map tool that can extract an identifiying hash from and elf file or an r8 dictionary. The tool writes the hash to a textproto, and also supports a merge mode to combine textprotos into a output file for inclusion in the build artifacts. Bug: 218888599 Test: m dist Test: symbols_map_test.go Change-Id: Icd3ed6e5510e058c92d97c78759e7a4cfcdbb6ca
2022-03-21 18:46:41 -07:00
parent 3c25ab1ac3
commit 36f55aabcd
9 changed files with 1099 additions and 0 deletions
--- a/cmd/symbols_map/r8_test.go
+++ b/cmd/symbols_map/r8_test.go
@@ -0,0 +1,91 @@
+// Copyright 2022 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package main
+
+import (
+	"bytes"
+	"strings"
+	"testing"
+)
+
+func Test_extractR8CompilerHash(t *testing.T) {
+	testCases := []struct {
+		name string
+		data string
+
+		hash string
+		err  string
+	}{
+		{
+			name: "simple",
+			data: `# compiler: R8
+# compiler_version: 3.3.18-dev
+# min_api: 10000
+# compiler_hash: bab44c1a04a2201b55fe10394f477994205c34e0
+# common_typos_disable
+# {"id":"com.android.tools.r8.mapping","version":"2.0"}
+# pg_map_id: 7fe8b95
+# pg_map_hash: SHA-256 7fe8b95ae71f179f63d2a585356fb9cf2c8fb94df9c9dd50621ffa6d9e9e88da
+android.car.userlib.UserHelper -> android.car.userlib.UserHelper:
+`,
+			hash: "7fe8b95ae71f179f63d2a585356fb9cf2c8fb94df9c9dd50621ffa6d9e9e88da",
+		},
+		{
+			name: "empty",
+			data: ``,
+			hash: "",
+		},
+		{
+			name: "non comment line",
+			data: `# compiler: R8
+# compiler_version: 3.3.18-dev
+# min_api: 10000
+# compiler_hash: bab44c1a04a2201b55fe10394f477994205c34e0
+# common_typos_disable
+# {"id":"com.android.tools.r8.mapping","version":"2.0"}
+# pg_map_id: 7fe8b95
+android.car.userlib.UserHelper -> android.car.userlib.UserHelper:
+# pg_map_hash: SHA-256 7fe8b95ae71f179f63d2a585356fb9cf2c8fb94df9c9dd50621ffa6d9e9e88da
+`,
+			hash: "",
+		},
+		{
+			name: "invalid hash",
+			data: `# pg_map_hash: foobar 7fe8b95ae71f179f63d2a585356fb9cf2c8fb94df9c9dd50621ffa6d9e9e88da`,
+			err:  "invalid hash type",
+		},
+	}
+
+	for _, tt := range testCases {
+		t.Run(tt.name, func(t *testing.T) {
+			hash, err := extractR8CompilerHash(bytes.NewBufferString(tt.data))
+			if err != nil {
+				if tt.err != "" {
+					if !strings.Contains(err.Error(), tt.err) {
+						t.Fatalf("incorrect error in extractR8CompilerHash, want %s got %s", tt.err, err)
+					}
+				} else {
+					t.Fatalf("unexpected error in extractR8CompilerHash: %s", err)
+				}
+			} else if tt.err != "" {
+				t.Fatalf("missing error in extractR8CompilerHash, want %s", tt.err)
+			}
+
+			if g, w := hash, tt.hash; g != w {
+				t.Errorf("incorrect hash, want %q got %q", w, g)
+			}
+		})
+	}
+}